Attachment for a blowing machine



FIG. 1 is a perspective view of an attachment for a blowing machine showing my new design;

FIG. 2 is a front elevational view of the attachment shown in FIG. 1; the rear elevational view thereof being a mirror image;

FIG. 3 is a top plan view of FIG. 1;

FIG. 4 is a bottom plan view of FIG. 1;

FIG. 5 is a right side elevational view of FIG. 1; and,

FIG. 6 is a left side elevational view of FIG. 1. 

The ornamental design for an attachment for a blowing machine, as shown. 